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// RUN — FITS
Can the Apple M3 Max 48GB run Very Deep VAEs (ImageNet-64)?
Yes — here's how fast and up to what context, with real measured numbers.
Very Deep VAEs (ImageNet-64) on the Apple M3 Max 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 632k | 1088-1312 t/s | ~27.2-32.8 (slow) |
| Q8 | yes | 634k | 2176-2624 t/s | ~54.4-65.6 (slow) |
| Q4 | yes | 635k | 3885.7-4685.7 t/s | ~97.1-117.1 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to SSD swap and speed drops to the "beyond" figure.
FAQ
Can the Apple M3 Max 48GB run Very Deep VAEs (ImageNet-64)?▶
Yes. At Q4 it generates ~3885.7-4685.7 tok/s and fits up to 635k context; beyond that it spills to SSD swap and slows to ~97.1-117.1 tok/s.
How much context fits?▶
At Q4, up to about 635k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.